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Finding the Fourth Proportional to 739.21, 1,020.07 and 444.37

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Solution

The fourth proportional to 739.21, 1,020.07 and 444.37 is: 613.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.21 : 1,020.07 = 444.37 : x
  2. Step 2: Convert to fraction form
    739.21/1,020.07 = 444.37/x
  3. Step 3: Cross multiply
    739.21x = 1,020.07 × 444.37
  4. Step 4: Simplify right side
    739.21x = 453,288.51
  5. Step 5: Solve for x
    x = 453,288.51/739.21
  6. Step 6: Final answer
    x = 613.21

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.